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发明名称
MEMBRANVENTIL.
摘要
申请公布号
DE1668157(U)
申请公布日期
1953.12.10
申请号
DE195300V3412U
申请日期
1953.10.13
申请人
KARL VOLZ
发明人
KARL VOLZ
分类号
主分类号
代理机构
代理人
主权项
地址
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